.page-faq {
  --faq-radius: 16px;
  --faq-gap: clamp(16px, 2.4vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq__hero {
  position: relative;
  overflow: hidden;
  padding: clamp(104px, 15vw, 168px) 0 clamp(56px, 8vw, 92px);
  background:
    radial-gradient(130% 100% at 8% -10%, #4d2f75 0%, #2f1b48 44%, #1b1029 100%);
  color: var(--ivory);
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(115deg, rgba(230, 205, 134, .05) 0 1px, transparent 1px 7px);
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 4%, rgba(201, 162, 39, .72) 44%, transparent 96%);
}

.page-faq__hero-inner {
  position: relative;
  z-index: 1;
}

.page-faq__hero .breadcrumbs {
  margin-bottom: 26px;
}

.page-faq__hero .breadcrumbs a,
.page-faq__hero .breadcrumbs li,
.page-faq__hero .breadcrumbs li[aria-current] {
  color: rgba(247, 243, 234, .62);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-faq__hero .breadcrumbs a:hover {
  color: var(--gold-bright);
}

.page-faq__hero-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin-bottom: 18px;
}

.page-faq__hero-head .eyebrow {
  margin: 0;
  color: var(--gold-bright);
}

.page-faq__hero-head .annot {
  color: rgba(247, 243, 234, .54);
}

.page-faq__hero h1 {
  margin: 0 0 24px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(46px, 10vw, 96px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--ivory);
}

.page-faq__hero h1::after {
  content: "";
  display: block;
  width: clamp(64px, 12vw, 120px);
  height: 3px;
  margin-top: 24px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 162, 39, 0));
}

.page-faq__hero-lead {
  max-width: 64ch;
  margin: 0 0 30px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.95;
  color: rgba(247, 243, 234, .82);
}

.page-faq__hero-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq__hero-chips .tag {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(230, 205, 134, .42);
  border-radius: var(--radius-pill);
  background: rgba(230, 205, 134, .07);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gold-bright);
}

/* ---------- 三类疑问总索引 ---------- */
.page-faq__index {
  padding: clamp(56px, 8vw, 96px) 0;
  background: var(--ivory);
}

.page-faq__index-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-bottom: clamp(36px, 5vw, 60px);
}

.page-faq__index-copy h2 {
  margin: 12px 0 16px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq__index-copy p {
  margin: 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(28, 30, 38, .74);
}

.page-faq__index-visual .img-frame {
  aspect-ratio: 4 / 3;
}

.page-faq__index-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq__index-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px 24px;
  background: #fff;
  border: var(--line-paper);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-paper);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq__index-card .card-index {
  font-size: 30px;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq__index-card h3 {
  margin: 4px 0 0;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq__index-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(28, 30, 38, .72);
}

.page-faq__index-link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--gold-bronze);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 106, 30, .5);
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-faq__index-link:hover,
.page-faq__index-link:focus-visible {
  color: var(--purple-900);
  border-color: var(--purple-900);
}

/* ---------- 索引 + 折叠区 ---------- */
.page-faq__body {
  padding: clamp(56px, 8vw, 96px) 0;
  background: var(--paper);
}

.page-faq__layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq__rail {
  align-self: start;
}

.page-faq__rail-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--slate);
}

.page-faq__rail-list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq__rail-list li {
  flex: 0 0 auto;
}

.page-faq__rail-list .index-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-left: 2px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: rgba(28, 30, 38, .68);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.page-faq__rail-list .index-mark .mono {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq__rail-list .index-mark:hover {
  color: var(--purple-900);
  background: rgba(255, 255, 255, .72);
}

.page-faq__rail-list .index-mark.is-current {
  color: var(--purple-900);
  font-weight: 600;
  background: #fff;
  border-left-color: var(--gold);
  box-shadow: var(--shadow-paper);
}

.page-faq__rail-note {
  display: none;
  margin: 20px 0 0;
}

/* ---------- 问题分组 ---------- */
.page-faq__qa {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  min-width: 0;
}

.page-faq__group {
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-faq__group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(42, 24, 64, .14);
}

.page-faq__group-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--gold);
  border-radius: 9px;
  background: rgba(255, 255, 255, .7);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--gold-bronze);
}

.page-faq__group-text h2 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq__group-text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(28, 30, 38, .62);
}

.page-faq__figure {
  margin: 0 0 20px;
  padding: 14px;
  background: #fff;
  border: var(--line-paper);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-paper);
}

.page-faq__figure .img-frame {
  aspect-ratio: 1 / 1;
}

.page-faq__figure .img-frame-caption {
  display: block;
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--slate);
}

/* ---------- 折叠卡 ---------- */
.page-faq__item {
  margin-bottom: 16px;
  background: #fff;
  border: 1px solid rgba(42, 24, 64, .14);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-paper);
  overflow: hidden;
  scroll-margin-top: calc(var(--header-h) + 28px);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq__item:last-child {
  margin-bottom: 0;
}

.page-faq__item[open] {
  border-color: rgba(201, 162, 39, .58);
  box-shadow: var(--shadow-lift);
}

.page-faq__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq__q::-webkit-details-marker {
  display: none;
}

.page-faq__q:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: -3px;
}

.page-faq__q-num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq__q-text {
  min-width: 0;
}

.page-faq__q-sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
}

.page-faq__q-sign::before,
.page-faq__q-sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--gold-bronze);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq__q-sign::before {
  width: 14px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq__q-sign::after {
  width: 1.5px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.page-faq__item[open] .page-faq__q-sign::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(.2);
}

.page-faq__a {
  padding: 16px 20px 22px;
  border-top: 1px dashed rgba(201, 162, 39, .34);
}

.page-faq__a p {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 2;
  color: rgba(28, 30, 38, .76);
}

.page-faq__item[open] .page-faq__a {
  animation: faqReveal var(--dur) var(--ease) both;
}

@keyframes faqReveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 联系客服 ---------- */
.page-faq__help {
  padding: clamp(60px, 9vw, 104px) 0;
  color: var(--ivory);
  background: radial-gradient(120% 120% at 85% 0%, #3a2159 0%, #241636 56%, #1b1029 100%);
}

.page-faq__help .eyebrow {
  color: var(--gold-bright);
}

.page-faq__help h2 {
  margin: 12px 0 18px;
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.8vw, 42px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--ivory);
}

.page-faq__help-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq__help-copy p {
  margin: 0 0 26px;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.95;
  color: rgba(247, 243, 234, .8);
}

.page-faq__help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq__help-actions .btn {
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.page-faq__help-actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .28);
}

.page-faq__help-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq__help-card {
  padding: 24px 22px;
  background: rgba(247, 243, 234, .06);
  border: 1px solid rgba(230, 205, 134, .3);
  border-radius: var(--faq-radius);
}

.page-faq__help-card .annot {
  margin: 0 0 10px;
  letter-spacing: .2em;
  color: var(--gold-bright);
}

.page-faq__help-value {
  margin: 0 0 12px;
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: .01em;
  color: var(--ivory);
  word-break: break-word;
}

.page-faq__help-card p:last-child {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(247, 243, 234, .62);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq__help-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq__index-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq__index-card:nth-child(2) {
    transform: translateY(14px);
  }

  .page-faq__index-card:nth-child(3) {
    transform: translateY(28px);
  }

  .page-faq__index-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lift);
  }

  .page-faq__index-card:nth-child(2):hover {
    transform: translateY(10px);
  }

  .page-faq__index-card:nth-child(3):hover {
    transform: translateY(24px);
  }
}

@media (min-width: 900px) {
  .page-faq__index-grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-faq__help-grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-faq__figure {
    max-width: 340px;
  }
}

@media (min-width: 960px) {
  .page-faq__layout {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }

  .page-faq__rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding-right: 12px;
  }

  .page-faq__rail-list {
    flex-direction: column;
    gap: 2px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq__rail-list .index-mark {
    white-space: normal;
    border-radius: 0 10px 10px 0;
  }

  .page-faq__rail-note {
    display: block;
  }

  .page-faq__q {
    padding: 20px 24px;
  }

  .page-faq__a {
    padding: 18px 24px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq__item[open] .page-faq__a {
    animation: none;
  }

  .page-faq__index-card,
  .page-faq__help-actions .btn {
    transition: none;
  }
}